Results 91 to 100 of about 2,918,449 (280)

Nonthermal Velocities in a Solar Active Region Observed by SERTS

The Astrophysical Journal
We present measurements of coronal nonthermal Doppler velocities in NOAA Active Region 7870 observed by the Solar EUV Research Telescope and Spectrograph during its 1995 sounding rocket flight (SERTS-95).
Jeffrey W. Brosius
doaj   +1 more source

Multiscale Regulation of Ru‐Based Catalysts for Upgrading Biomass‐Derived Levulinic Acid and Levulinates to γ‐Valerolactone: Mechanisms, Advances, and Challenges

Advanced Science, EarlyView.
This review summarizes recent advances in the mechanistic, thermodynamic, and kinetic studies of biomass‐derived levulinic acid/levulinates conversion to γ‐valerolactone, along with the corresponding multiscale regulation strategies of Ru‐based catalysts.
Xin Ni, Cailu Xiao, Gongbing Zhou, Jingzi Zhang   +3 more
wiley   +1 more source

Detecting Solar Flare Precursors Using DEFT

The Astrophysical Journal
The Detection and EUV Flare Tracking (DEFT) tool automatically identifies flare precursors in extreme ultraviolet (EUV) observations in a fast and consistent manner, with minimal computational overhead. DEFT currently uses GOES/SUVI 304 Å observations to
Larisza D. Krista
doaj   +1 more source

High precision, high time-cadence measurements of the MgII index of solar activity by the GOES-R Extreme Ultraviolet Irradiance Sensor 2: EUVS-C initial flight performance

Journal of Space Weather and Space Climate
EUVS-C is one component of the Extreme Ultraviolet Irradiance Sensor (EUVS) instrument. EUVS, together with the X-ray sensor (XRS), comprise the Extreme Ultraviolet and X-ray Irradiances Sensors (EXIS) investigation (Machol JL et al. 2020.
McClintock William E., Snow Martin, Eden Thomas D., Eparvier Francis G., Machol Janet L., Woodraska Donald L.   +5 more
doaj   +1 more source

Quasi-periodic pulsations in ionospheric TEC synchronized with solar flare EUV emission [PDF]

The extreme ultraviolet (EUV) and X-ray radiation emitted during solar flares has been shown to significantly increase the electron density of the Earth's ionosphere.
O’Hare, Aisling N., Bekker, Susanna; id_orcid, Hayes, Laura A., Milligan, Ryan O.; id_orcid   +3 more
core   +1 more source

Bridging Performance and Fate: A Framework for Sustainable, Composite‐Based Flexible Electronic Systems

Advanced Electronic Materials, EarlyView.
Composite‐based flexible electronics integrate biodegradable polymers, conductive networks, and multilayer device architectures to balance electrical performance, mechanical durability, and controlled degradation. Interfacial engineering and encapsulation regulate transport stability and operational lifetime, while programmed disassembly enables ...
Sayam, Sangho Cho
wiley   +1 more source

Extreme-ultraviolet Synthesis of Nanojet-like Ejections due to Coalescing Flux Ropes

The Astrophysical Journal Letters
Detection and characterization of small-scale energetic events such as nanoflares and nanojets remain challenging owing to their short lifetimes, small spatial extent, and relatively low energy release, despite their potential role in coronal heating ...
Samrat Sen, A. Ramada C. Sukarmadji, D. Nóbrega-Siverio, F. Moreno-Insertis, J. Martínez-Sykora, Patrick Antolin   +5 more
doaj   +1 more source

Eco‐Friendly Laser‐Induced Graphene/Perovskite Hybrids for Eco‐Friendly Photodetectors

Advanced Electronic Materials, EarlyView.
A sustainable paper‐based photodetector was developed by combining laser‐induced graphene (LIG) with MAPbI3 perovskite. Compared with pure LIG devices, the hybrid photodetector exhibited nearly 10‐fold higher responsivity and 7‐fold greater detectivity while maintaining stable performance after 1000 bending cycles, demonstrating its potential for ...
Ya‐Yun Huang, Wei‐Hua Hsu, Bo‐Hua Chiou, Wei‐Chen Tu   +3 more
wiley   +1 more source

The Link between Nonthermal Velocity and Free Magnetic Energy in Solar Flares

The Astrophysical Journal Letters
The cause of excess spectral line broadening (nonthermal velocity) is not definitively known, but given its rise before and during flaring, the causal processes hold clues to understanding the triggers for the onset of reconnection and the release of ...
James McKevitt, Robert Jarolim, Sarah Matthews, Deborah Baker, Manuela Temmer, Astrid Veronig, Hamish Reid, Lucie Green   +7 more
doaj   +1 more source

Maximum Stability Point Tracking Stabilizes Wide‐Bandgap Mixed‐Halide Perovskite Solar Cells

Advanced Energy Materials, EarlyView.
A maximum stability point tracking (MSPT) strategy suppresses charge trapping‐induced halide segregation, enabling wide‐bandgap perovskite solar cells to achieve significantly enhanced operational stability compared to conventional maximum power point tracking (MPPT).
Seongheon Kim, Geon Kim, Taeeon Kim, Kwang Seop Shin, Jongchan Kim, Mansoo Choi, Yun Seog Lee, Namyoung Ahn   +7 more
wiley   +1 more source